class Async::Node

def consume
	if parent = @parent and finished?
		parent.delete_child(self)
		
		if @children
			@children.each do |child|
				if child.finished?
					delete_child(child)
				else
					# In theory we don't need to do this... because we are throwing away the list. However, if you don't correctly update the list when moving the child to the parent, it foobars the enumeration, and subsequent nodes will be skipped, or in the worst case you might start enumerating the parents nodes.
					delete_child(child)
					parent.add_child(child)
				end
			end
			
			@children = nil
		end
		
		parent.consume
	end
end